20-t=7

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Solution for 20-t=7 equation: 


Simplifying
20 + -1t = 7

Solving
20 + -1t = 7

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '-20' to each side of the equation.
20 + -20 + -1t = 7 + -20

Combine like terms: 20 + -20 = 0
0 + -1t = 7 + -20
-1t = 7 + -20

Combine like terms: 7 + -20 = -13
-1t = -13

Divide each side by '-1'.
t = 13

Simplifying
t = 13

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